1 /* 2 * (C) Copyright 2002-2004 3 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com 4 * 5 * Copyright (C) 2003 Arabella Software Ltd. 6 * Yuli Barcohen <yuli@arabellasw.com> 7 * 8 * Copyright (C) 2004 9 * Ed Okerson 10 * 11 * Copyright (C) 2006 12 * Tolunay Orkun <listmember@orkun.us> 13 * 14 * See file CREDITS for list of people who contributed to this 15 * project. 16 * 17 * This program is free software; you can redistribute it and/or 18 * modify it under the terms of the GNU General Public License as 19 * published by the Free Software Foundation; either version 2 of 20 * the License, or (at your option) any later version. 21 * 22 * This program is distributed in the hope that it will be useful, 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 * GNU General Public License for more details. 26 * 27 * You should have received a copy of the GNU General Public License 28 * along with this program; if not, write to the Free Software 29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 30 * MA 02111-1307 USA 31 * 32 */ 33 34 /* The DEBUG define must be before common to enable debugging */ 35 /* #define DEBUG */ 36 37 #include <common.h> 38 #include <asm/processor.h> 39 #include <asm/io.h> 40 #include <asm/byteorder.h> 41 #include <environment.h> 42 #include <mtd/cfi_flash.h> 43 44 /* 45 * This file implements a Common Flash Interface (CFI) driver for 46 * U-Boot. 47 * 48 * The width of the port and the width of the chips are determined at 49 * initialization. These widths are used to calculate the address for 50 * access CFI data structures. 51 * 52 * References 53 * JEDEC Standard JESD68 - Common Flash Interface (CFI) 54 * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes 55 * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets 56 * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet 57 * AMD CFI Specification, Release 2.0 December 1, 2001 58 * AMD/Spansion Application Note: Migration from Single-byte to Three-byte 59 * Device IDs, Publication Number 25538 Revision A, November 8, 2001 60 * 61 * Define CONFIG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between 62 * reading and writing ... (yes there is such a Hardware). 63 */ 64 65 #ifndef CONFIG_SYS_FLASH_BANKS_LIST 66 #define CONFIG_SYS_FLASH_BANKS_LIST { CONFIG_SYS_FLASH_BASE } 67 #endif 68 69 static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT }; 70 static uint flash_verbose = 1; 71 72 /* use CONFIG_SYS_MAX_FLASH_BANKS_DETECT if defined */ 73 #ifdef CONFIG_SYS_MAX_FLASH_BANKS_DETECT 74 # define CFI_MAX_FLASH_BANKS CONFIG_SYS_MAX_FLASH_BANKS_DETECT 75 #else 76 # define CFI_MAX_FLASH_BANKS CONFIG_SYS_MAX_FLASH_BANKS 77 #endif 78 79 flash_info_t flash_info[CFI_MAX_FLASH_BANKS]; /* FLASH chips info */ 80 81 /* 82 * Check if chip width is defined. If not, start detecting with 8bit. 83 */ 84 #ifndef CONFIG_SYS_FLASH_CFI_WIDTH 85 #define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_8BIT 86 #endif 87 88 static void __flash_write8(u8 value, void *addr) 89 { 90 __raw_writeb(value, addr); 91 } 92 93 static void __flash_write16(u16 value, void *addr) 94 { 95 __raw_writew(value, addr); 96 } 97 98 static void __flash_write32(u32 value, void *addr) 99 { 100 __raw_writel(value, addr); 101 } 102 103 static void __flash_write64(u64 value, void *addr) 104 { 105 /* No architectures currently implement __raw_writeq() */ 106 *(volatile u64 *)addr = value; 107 } 108 109 static u8 __flash_read8(void *addr) 110 { 111 return __raw_readb(addr); 112 } 113 114 static u16 __flash_read16(void *addr) 115 { 116 return __raw_readw(addr); 117 } 118 119 static u32 __flash_read32(void *addr) 120 { 121 return __raw_readl(addr); 122 } 123 124 static u64 __flash_read64(void *addr) 125 { 126 /* No architectures currently implement __raw_readq() */ 127 return *(volatile u64 *)addr; 128 } 129 130 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS 131 void flash_write8(u8 value, void *addr)__attribute__((weak, alias("__flash_write8"))); 132 void flash_write16(u16 value, void *addr)__attribute__((weak, alias("__flash_write16"))); 133 void flash_write32(u32 value, void *addr)__attribute__((weak, alias("__flash_write32"))); 134 void flash_write64(u64 value, void *addr)__attribute__((weak, alias("__flash_write64"))); 135 u8 flash_read8(void *addr)__attribute__((weak, alias("__flash_read8"))); 136 u16 flash_read16(void *addr)__attribute__((weak, alias("__flash_read16"))); 137 u32 flash_read32(void *addr)__attribute__((weak, alias("__flash_read32"))); 138 u64 flash_read64(void *addr)__attribute__((weak, alias("__flash_read64"))); 139 #else 140 #define flash_write8 __flash_write8 141 #define flash_write16 __flash_write16 142 #define flash_write32 __flash_write32 143 #define flash_write64 __flash_write64 144 #define flash_read8 __flash_read8 145 #define flash_read16 __flash_read16 146 #define flash_read32 __flash_read32 147 #define flash_read64 __flash_read64 148 #endif 149 150 /*----------------------------------------------------------------------- 151 */ 152 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) 153 flash_info_t *flash_get_info(ulong base) 154 { 155 int i; 156 flash_info_t * info = 0; 157 158 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { 159 info = & flash_info[i]; 160 if (info->size && info->start[0] <= base && 161 base <= info->start[0] + info->size - 1) 162 break; 163 } 164 165 return i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : info; 166 } 167 #endif 168 169 unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect) 170 { 171 if (sect != (info->sector_count - 1)) 172 return info->start[sect + 1] - info->start[sect]; 173 else 174 return info->start[0] + info->size - info->start[sect]; 175 } 176 177 /*----------------------------------------------------------------------- 178 * create an address based on the offset and the port width 179 */ 180 static inline void * 181 flash_map (flash_info_t * info, flash_sect_t sect, uint offset) 182 { 183 unsigned int byte_offset = offset * info->portwidth; 184 185 return (void *)(info->start[sect] + byte_offset); 186 } 187 188 static inline void flash_unmap(flash_info_t *info, flash_sect_t sect, 189 unsigned int offset, void *addr) 190 { 191 } 192 193 /*----------------------------------------------------------------------- 194 * make a proper sized command based on the port and chip widths 195 */ 196 static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf) 197 { 198 int i; 199 int cword_offset; 200 int cp_offset; 201 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA) 202 u32 cmd_le = cpu_to_le32(cmd); 203 #endif 204 uchar val; 205 uchar *cp = (uchar *) cmdbuf; 206 207 for (i = info->portwidth; i > 0; i--){ 208 cword_offset = (info->portwidth-i)%info->chipwidth; 209 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA) 210 cp_offset = info->portwidth - i; 211 val = *((uchar*)&cmd_le + cword_offset); 212 #else 213 cp_offset = i - 1; 214 val = *((uchar*)&cmd + sizeof(u32) - cword_offset - 1); 215 #endif 216 cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val; 217 } 218 } 219 220 #ifdef DEBUG 221 /*----------------------------------------------------------------------- 222 * Debug support 223 */ 224 static void print_longlong (char *str, unsigned long long data) 225 { 226 int i; 227 char *cp; 228 229 cp = (char *) &data; 230 for (i = 0; i < 8; i++) 231 sprintf (&str[i * 2], "%2.2x", *cp++); 232 } 233 234 static void flash_printqry (struct cfi_qry *qry) 235 { 236 u8 *p = (u8 *)qry; 237 int x, y; 238 239 for (x = 0; x < sizeof(struct cfi_qry); x += 16) { 240 debug("%02x : ", x); 241 for (y = 0; y < 16; y++) 242 debug("%2.2x ", p[x + y]); 243 debug(" "); 244 for (y = 0; y < 16; y++) { 245 unsigned char c = p[x + y]; 246 if (c >= 0x20 && c <= 0x7e) 247 debug("%c", c); 248 else 249 debug("."); 250 } 251 debug("\n"); 252 } 253 } 254 #endif 255 256 257 /*----------------------------------------------------------------------- 258 * read a character at a port width address 259 */ 260 static inline uchar flash_read_uchar (flash_info_t * info, uint offset) 261 { 262 uchar *cp; 263 uchar retval; 264 265 cp = flash_map (info, 0, offset); 266 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA) 267 retval = flash_read8(cp); 268 #else 269 retval = flash_read8(cp + info->portwidth - 1); 270 #endif 271 flash_unmap (info, 0, offset, cp); 272 return retval; 273 } 274 275 /*----------------------------------------------------------------------- 276 * read a word at a port width address, assume 16bit bus 277 */ 278 static inline ushort flash_read_word (flash_info_t * info, uint offset) 279 { 280 ushort *addr, retval; 281 282 addr = flash_map (info, 0, offset); 283 retval = flash_read16 (addr); 284 flash_unmap (info, 0, offset, addr); 285 return retval; 286 } 287 288 289 /*----------------------------------------------------------------------- 290 * read a long word by picking the least significant byte of each maximum 291 * port size word. Swap for ppc format. 292 */ 293 static ulong flash_read_long (flash_info_t * info, flash_sect_t sect, 294 uint offset) 295 { 296 uchar *addr; 297 ulong retval; 298 299 #ifdef DEBUG 300 int x; 301 #endif 302 addr = flash_map (info, sect, offset); 303 304 #ifdef DEBUG 305 debug ("long addr is at %p info->portwidth = %d\n", addr, 306 info->portwidth); 307 for (x = 0; x < 4 * info->portwidth; x++) { 308 debug ("addr[%x] = 0x%x\n", x, flash_read8(addr + x)); 309 } 310 #endif 311 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA) 312 retval = ((flash_read8(addr) << 16) | 313 (flash_read8(addr + info->portwidth) << 24) | 314 (flash_read8(addr + 2 * info->portwidth)) | 315 (flash_read8(addr + 3 * info->portwidth) << 8)); 316 #else 317 retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) | 318 (flash_read8(addr + info->portwidth - 1) << 16) | 319 (flash_read8(addr + 4 * info->portwidth - 1) << 8) | 320 (flash_read8(addr + 3 * info->portwidth - 1))); 321 #endif 322 flash_unmap(info, sect, offset, addr); 323 324 return retval; 325 } 326 327 /* 328 * Write a proper sized command to the correct address 329 */ 330 void flash_write_cmd (flash_info_t * info, flash_sect_t sect, 331 uint offset, u32 cmd) 332 { 333 334 void *addr; 335 cfiword_t cword; 336 337 addr = flash_map (info, sect, offset); 338 flash_make_cmd (info, cmd, &cword); 339 switch (info->portwidth) { 340 case FLASH_CFI_8BIT: 341 debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd, 342 cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); 343 flash_write8(cword.c, addr); 344 break; 345 case FLASH_CFI_16BIT: 346 debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr, 347 cmd, cword.w, 348 info->chipwidth << CFI_FLASH_SHIFT_WIDTH); 349 flash_write16(cword.w, addr); 350 break; 351 case FLASH_CFI_32BIT: 352 debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr, 353 cmd, cword.l, 354 info->chipwidth << CFI_FLASH_SHIFT_WIDTH); 355 flash_write32(cword.l, addr); 356 break; 357 case FLASH_CFI_64BIT: 358 #ifdef DEBUG 359 { 360 char str[20]; 361 362 print_longlong (str, cword.ll); 363 364 debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n", 365 addr, cmd, str, 366 info->chipwidth << CFI_FLASH_SHIFT_WIDTH); 367 } 368 #endif 369 flash_write64(cword.ll, addr); 370 break; 371 } 372 373 /* Ensure all the instructions are fully finished */ 374 sync(); 375 376 flash_unmap(info, sect, offset, addr); 377 } 378 379 static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect) 380 { 381 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START); 382 flash_write_cmd (info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK); 383 } 384 385 /*----------------------------------------------------------------------- 386 */ 387 static int flash_isequal (flash_info_t * info, flash_sect_t sect, 388 uint offset, uchar cmd) 389 { 390 void *addr; 391 cfiword_t cword; 392 int retval; 393 394 addr = flash_map (info, sect, offset); 395 flash_make_cmd (info, cmd, &cword); 396 397 debug ("is= cmd %x(%c) addr %p ", cmd, cmd, addr); 398 switch (info->portwidth) { 399 case FLASH_CFI_8BIT: 400 debug ("is= %x %x\n", flash_read8(addr), cword.c); 401 retval = (flash_read8(addr) == cword.c); 402 break; 403 case FLASH_CFI_16BIT: 404 debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w); 405 retval = (flash_read16(addr) == cword.w); 406 break; 407 case FLASH_CFI_32BIT: 408 debug ("is= %8.8x %8.8lx\n", flash_read32(addr), cword.l); 409 retval = (flash_read32(addr) == cword.l); 410 break; 411 case FLASH_CFI_64BIT: 412 #ifdef DEBUG 413 { 414 char str1[20]; 415 char str2[20]; 416 417 print_longlong (str1, flash_read64(addr)); 418 print_longlong (str2, cword.ll); 419 debug ("is= %s %s\n", str1, str2); 420 } 421 #endif 422 retval = (flash_read64(addr) == cword.ll); 423 break; 424 default: 425 retval = 0; 426 break; 427 } 428 flash_unmap(info, sect, offset, addr); 429 430 return retval; 431 } 432 433 /*----------------------------------------------------------------------- 434 */ 435 static int flash_isset (flash_info_t * info, flash_sect_t sect, 436 uint offset, uchar cmd) 437 { 438 void *addr; 439 cfiword_t cword; 440 int retval; 441 442 addr = flash_map (info, sect, offset); 443 flash_make_cmd (info, cmd, &cword); 444 switch (info->portwidth) { 445 case FLASH_CFI_8BIT: 446 retval = ((flash_read8(addr) & cword.c) == cword.c); 447 break; 448 case FLASH_CFI_16BIT: 449 retval = ((flash_read16(addr) & cword.w) == cword.w); 450 break; 451 case FLASH_CFI_32BIT: 452 retval = ((flash_read32(addr) & cword.l) == cword.l); 453 break; 454 case FLASH_CFI_64BIT: 455 retval = ((flash_read64(addr) & cword.ll) == cword.ll); 456 break; 457 default: 458 retval = 0; 459 break; 460 } 461 flash_unmap(info, sect, offset, addr); 462 463 return retval; 464 } 465 466 /*----------------------------------------------------------------------- 467 */ 468 static int flash_toggle (flash_info_t * info, flash_sect_t sect, 469 uint offset, uchar cmd) 470 { 471 void *addr; 472 cfiword_t cword; 473 int retval; 474 475 addr = flash_map (info, sect, offset); 476 flash_make_cmd (info, cmd, &cword); 477 switch (info->portwidth) { 478 case FLASH_CFI_8BIT: 479 retval = flash_read8(addr) != flash_read8(addr); 480 break; 481 case FLASH_CFI_16BIT: 482 retval = flash_read16(addr) != flash_read16(addr); 483 break; 484 case FLASH_CFI_32BIT: 485 retval = flash_read32(addr) != flash_read32(addr); 486 break; 487 case FLASH_CFI_64BIT: 488 retval = ( (flash_read32( addr ) != flash_read32( addr )) || 489 (flash_read32(addr+4) != flash_read32(addr+4)) ); 490 break; 491 default: 492 retval = 0; 493 break; 494 } 495 flash_unmap(info, sect, offset, addr); 496 497 return retval; 498 } 499 500 /* 501 * flash_is_busy - check to see if the flash is busy 502 * 503 * This routine checks the status of the chip and returns true if the 504 * chip is busy. 505 */ 506 static int flash_is_busy (flash_info_t * info, flash_sect_t sect) 507 { 508 int retval; 509 510 switch (info->vendor) { 511 case CFI_CMDSET_INTEL_PROG_REGIONS: 512 case CFI_CMDSET_INTEL_STANDARD: 513 case CFI_CMDSET_INTEL_EXTENDED: 514 retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE); 515 break; 516 case CFI_CMDSET_AMD_STANDARD: 517 case CFI_CMDSET_AMD_EXTENDED: 518 #ifdef CONFIG_FLASH_CFI_LEGACY 519 case CFI_CMDSET_AMD_LEGACY: 520 #endif 521 retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE); 522 break; 523 default: 524 retval = 0; 525 } 526 debug ("flash_is_busy: %d\n", retval); 527 return retval; 528 } 529 530 /*----------------------------------------------------------------------- 531 * wait for XSR.7 to be set. Time out with an error if it does not. 532 * This routine does not set the flash to read-array mode. 533 */ 534 static int flash_status_check (flash_info_t * info, flash_sect_t sector, 535 ulong tout, char *prompt) 536 { 537 ulong start; 538 539 #if CONFIG_SYS_HZ != 1000 540 if ((ulong)CONFIG_SYS_HZ > 100000) 541 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */ 542 else 543 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000); 544 #endif 545 546 /* Wait for command completion */ 547 reset_timer(); 548 start = get_timer (0); 549 while (flash_is_busy (info, sector)) { 550 if (get_timer (start) > tout) { 551 printf ("Flash %s timeout at address %lx data %lx\n", 552 prompt, info->start[sector], 553 flash_read_long (info, sector, 0)); 554 flash_write_cmd (info, sector, 0, info->cmd_reset); 555 return ERR_TIMOUT; 556 } 557 udelay (1); /* also triggers watchdog */ 558 } 559 return ERR_OK; 560 } 561 562 /*----------------------------------------------------------------------- 563 * Wait for XSR.7 to be set, if it times out print an error, otherwise 564 * do a full status check. 565 * 566 * This routine sets the flash to read-array mode. 567 */ 568 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector, 569 ulong tout, char *prompt) 570 { 571 int retcode; 572 573 retcode = flash_status_check (info, sector, tout, prompt); 574 switch (info->vendor) { 575 case CFI_CMDSET_INTEL_PROG_REGIONS: 576 case CFI_CMDSET_INTEL_EXTENDED: 577 case CFI_CMDSET_INTEL_STANDARD: 578 if ((retcode != ERR_OK) 579 && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) { 580 retcode = ERR_INVAL; 581 printf ("Flash %s error at address %lx\n", prompt, 582 info->start[sector]); 583 if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS | 584 FLASH_STATUS_PSLBS)) { 585 puts ("Command Sequence Error.\n"); 586 } else if (flash_isset (info, sector, 0, 587 FLASH_STATUS_ECLBS)) { 588 puts ("Block Erase Error.\n"); 589 retcode = ERR_NOT_ERASED; 590 } else if (flash_isset (info, sector, 0, 591 FLASH_STATUS_PSLBS)) { 592 puts ("Locking Error\n"); 593 } 594 if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) { 595 puts ("Block locked.\n"); 596 retcode = ERR_PROTECTED; 597 } 598 if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS)) 599 puts ("Vpp Low Error.\n"); 600 } 601 flash_write_cmd (info, sector, 0, info->cmd_reset); 602 break; 603 default: 604 break; 605 } 606 return retcode; 607 } 608 609 static int use_flash_status_poll(flash_info_t *info) 610 { 611 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL 612 if (info->vendor == CFI_CMDSET_AMD_EXTENDED || 613 info->vendor == CFI_CMDSET_AMD_STANDARD) 614 return 1; 615 #endif 616 return 0; 617 } 618 619 static int flash_status_poll(flash_info_t *info, void *src, void *dst, 620 ulong tout, char *prompt) 621 { 622 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL 623 ulong start; 624 int ready; 625 626 #if CONFIG_SYS_HZ != 1000 627 if ((ulong)CONFIG_SYS_HZ > 100000) 628 tout *= (ulong)CONFIG_SYS_HZ / 1000; /* for a big HZ, avoid overflow */ 629 else 630 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000); 631 #endif 632 633 /* Wait for command completion */ 634 reset_timer(); 635 start = get_timer(0); 636 while (1) { 637 switch (info->portwidth) { 638 case FLASH_CFI_8BIT: 639 ready = flash_read8(dst) == flash_read8(src); 640 break; 641 case FLASH_CFI_16BIT: 642 ready = flash_read16(dst) == flash_read16(src); 643 break; 644 case FLASH_CFI_32BIT: 645 ready = flash_read32(dst) == flash_read32(src); 646 break; 647 case FLASH_CFI_64BIT: 648 ready = flash_read64(dst) == flash_read64(src); 649 break; 650 default: 651 ready = 0; 652 break; 653 } 654 if (ready) 655 break; 656 if (get_timer(start) > tout) { 657 printf("Flash %s timeout at address %lx data %lx\n", 658 prompt, (ulong)dst, (ulong)flash_read8(dst)); 659 return ERR_TIMOUT; 660 } 661 udelay(1); /* also triggers watchdog */ 662 } 663 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */ 664 return ERR_OK; 665 } 666 667 /*----------------------------------------------------------------------- 668 */ 669 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) 670 { 671 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA) 672 unsigned short w; 673 unsigned int l; 674 unsigned long long ll; 675 #endif 676 677 switch (info->portwidth) { 678 case FLASH_CFI_8BIT: 679 cword->c = c; 680 break; 681 case FLASH_CFI_16BIT: 682 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA) 683 w = c; 684 w <<= 8; 685 cword->w = (cword->w >> 8) | w; 686 #else 687 cword->w = (cword->w << 8) | c; 688 #endif 689 break; 690 case FLASH_CFI_32BIT: 691 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA) 692 l = c; 693 l <<= 24; 694 cword->l = (cword->l >> 8) | l; 695 #else 696 cword->l = (cword->l << 8) | c; 697 #endif 698 break; 699 case FLASH_CFI_64BIT: 700 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA) 701 ll = c; 702 ll <<= 56; 703 cword->ll = (cword->ll >> 8) | ll; 704 #else 705 cword->ll = (cword->ll << 8) | c; 706 #endif 707 break; 708 } 709 } 710 711 /* 712 * Loop through the sector table starting from the previously found sector. 713 * Searches forwards or backwards, dependent on the passed address. 714 */ 715 static flash_sect_t find_sector (flash_info_t * info, ulong addr) 716 { 717 static flash_sect_t saved_sector = 0; /* previously found sector */ 718 flash_sect_t sector = saved_sector; 719 720 while ((info->start[sector] < addr) 721 && (sector < info->sector_count - 1)) 722 sector++; 723 while ((info->start[sector] > addr) && (sector > 0)) 724 /* 725 * also decrements the sector in case of an overshot 726 * in the first loop 727 */ 728 sector--; 729 730 saved_sector = sector; 731 return sector; 732 } 733 734 /*----------------------------------------------------------------------- 735 */ 736 static int flash_write_cfiword (flash_info_t * info, ulong dest, 737 cfiword_t cword) 738 { 739 void *dstaddr = (void *)dest; 740 int flag; 741 flash_sect_t sect = 0; 742 char sect_found = 0; 743 744 /* Check if Flash is (sufficiently) erased */ 745 switch (info->portwidth) { 746 case FLASH_CFI_8BIT: 747 flag = ((flash_read8(dstaddr) & cword.c) == cword.c); 748 break; 749 case FLASH_CFI_16BIT: 750 flag = ((flash_read16(dstaddr) & cword.w) == cword.w); 751 break; 752 case FLASH_CFI_32BIT: 753 flag = ((flash_read32(dstaddr) & cword.l) == cword.l); 754 break; 755 case FLASH_CFI_64BIT: 756 flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll); 757 break; 758 default: 759 flag = 0; 760 break; 761 } 762 if (!flag) 763 return ERR_NOT_ERASED; 764 765 /* Disable interrupts which might cause a timeout here */ 766 flag = disable_interrupts (); 767 768 switch (info->vendor) { 769 case CFI_CMDSET_INTEL_PROG_REGIONS: 770 case CFI_CMDSET_INTEL_EXTENDED: 771 case CFI_CMDSET_INTEL_STANDARD: 772 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS); 773 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE); 774 break; 775 case CFI_CMDSET_AMD_EXTENDED: 776 case CFI_CMDSET_AMD_STANDARD: 777 sect = find_sector(info, dest); 778 flash_unlock_seq (info, sect); 779 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE); 780 sect_found = 1; 781 break; 782 #ifdef CONFIG_FLASH_CFI_LEGACY 783 case CFI_CMDSET_AMD_LEGACY: 784 sect = find_sector(info, dest); 785 flash_unlock_seq (info, 0); 786 flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE); 787 sect_found = 1; 788 break; 789 #endif 790 } 791 792 switch (info->portwidth) { 793 case FLASH_CFI_8BIT: 794 flash_write8(cword.c, dstaddr); 795 break; 796 case FLASH_CFI_16BIT: 797 flash_write16(cword.w, dstaddr); 798 break; 799 case FLASH_CFI_32BIT: 800 flash_write32(cword.l, dstaddr); 801 break; 802 case FLASH_CFI_64BIT: 803 flash_write64(cword.ll, dstaddr); 804 break; 805 } 806 807 /* re-enable interrupts if necessary */ 808 if (flag) 809 enable_interrupts (); 810 811 if (!sect_found) 812 sect = find_sector (info, dest); 813 814 if (use_flash_status_poll(info)) 815 return flash_status_poll(info, &cword, dstaddr, 816 info->write_tout, "write"); 817 else 818 return flash_full_status_check(info, sect, 819 info->write_tout, "write"); 820 } 821 822 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE 823 824 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, 825 int len) 826 { 827 flash_sect_t sector; 828 int cnt; 829 int retcode; 830 void *src = cp; 831 void *dst = (void *)dest; 832 void *dst2 = dst; 833 int flag = 0; 834 uint offset = 0; 835 unsigned int shift; 836 uchar write_cmd; 837 838 switch (info->portwidth) { 839 case FLASH_CFI_8BIT: 840 shift = 0; 841 break; 842 case FLASH_CFI_16BIT: 843 shift = 1; 844 break; 845 case FLASH_CFI_32BIT: 846 shift = 2; 847 break; 848 case FLASH_CFI_64BIT: 849 shift = 3; 850 break; 851 default: 852 retcode = ERR_INVAL; 853 goto out_unmap; 854 } 855 856 cnt = len >> shift; 857 858 while ((cnt-- > 0) && (flag == 0)) { 859 switch (info->portwidth) { 860 case FLASH_CFI_8BIT: 861 flag = ((flash_read8(dst2) & flash_read8(src)) == 862 flash_read8(src)); 863 src += 1, dst2 += 1; 864 break; 865 case FLASH_CFI_16BIT: 866 flag = ((flash_read16(dst2) & flash_read16(src)) == 867 flash_read16(src)); 868 src += 2, dst2 += 2; 869 break; 870 case FLASH_CFI_32BIT: 871 flag = ((flash_read32(dst2) & flash_read32(src)) == 872 flash_read32(src)); 873 src += 4, dst2 += 4; 874 break; 875 case FLASH_CFI_64BIT: 876 flag = ((flash_read64(dst2) & flash_read64(src)) == 877 flash_read64(src)); 878 src += 8, dst2 += 8; 879 break; 880 } 881 } 882 if (!flag) { 883 retcode = ERR_NOT_ERASED; 884 goto out_unmap; 885 } 886 887 src = cp; 888 sector = find_sector (info, dest); 889 890 switch (info->vendor) { 891 case CFI_CMDSET_INTEL_PROG_REGIONS: 892 case CFI_CMDSET_INTEL_STANDARD: 893 case CFI_CMDSET_INTEL_EXTENDED: 894 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ? 895 FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER; 896 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS); 897 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS); 898 flash_write_cmd (info, sector, 0, write_cmd); 899 retcode = flash_status_check (info, sector, 900 info->buffer_write_tout, 901 "write to buffer"); 902 if (retcode == ERR_OK) { 903 /* reduce the number of loops by the width of 904 * the port */ 905 cnt = len >> shift; 906 flash_write_cmd (info, sector, 0, cnt - 1); 907 while (cnt-- > 0) { 908 switch (info->portwidth) { 909 case FLASH_CFI_8BIT: 910 flash_write8(flash_read8(src), dst); 911 src += 1, dst += 1; 912 break; 913 case FLASH_CFI_16BIT: 914 flash_write16(flash_read16(src), dst); 915 src += 2, dst += 2; 916 break; 917 case FLASH_CFI_32BIT: 918 flash_write32(flash_read32(src), dst); 919 src += 4, dst += 4; 920 break; 921 case FLASH_CFI_64BIT: 922 flash_write64(flash_read64(src), dst); 923 src += 8, dst += 8; 924 break; 925 default: 926 retcode = ERR_INVAL; 927 goto out_unmap; 928 } 929 } 930 flash_write_cmd (info, sector, 0, 931 FLASH_CMD_WRITE_BUFFER_CONFIRM); 932 retcode = flash_full_status_check ( 933 info, sector, info->buffer_write_tout, 934 "buffer write"); 935 } 936 937 break; 938 939 case CFI_CMDSET_AMD_STANDARD: 940 case CFI_CMDSET_AMD_EXTENDED: 941 flash_unlock_seq(info,0); 942 943 #ifdef CONFIG_FLASH_SPANSION_S29WS_N 944 offset = ((unsigned long)dst - info->start[sector]) >> shift; 945 #endif 946 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER); 947 cnt = len >> shift; 948 flash_write_cmd(info, sector, offset, cnt - 1); 949 950 switch (info->portwidth) { 951 case FLASH_CFI_8BIT: 952 while (cnt-- > 0) { 953 flash_write8(flash_read8(src), dst); 954 src += 1, dst += 1; 955 } 956 break; 957 case FLASH_CFI_16BIT: 958 while (cnt-- > 0) { 959 flash_write16(flash_read16(src), dst); 960 src += 2, dst += 2; 961 } 962 break; 963 case FLASH_CFI_32BIT: 964 while (cnt-- > 0) { 965 flash_write32(flash_read32(src), dst); 966 src += 4, dst += 4; 967 } 968 break; 969 case FLASH_CFI_64BIT: 970 while (cnt-- > 0) { 971 flash_write64(flash_read64(src), dst); 972 src += 8, dst += 8; 973 } 974 break; 975 default: 976 retcode = ERR_INVAL; 977 goto out_unmap; 978 } 979 980 flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM); 981 if (use_flash_status_poll(info)) 982 retcode = flash_status_poll(info, src - (1 << shift), 983 dst - (1 << shift), 984 info->buffer_write_tout, 985 "buffer write"); 986 else 987 retcode = flash_full_status_check(info, sector, 988 info->buffer_write_tout, 989 "buffer write"); 990 break; 991 992 default: 993 debug ("Unknown Command Set\n"); 994 retcode = ERR_INVAL; 995 break; 996 } 997 998 out_unmap: 999 return retcode; 1000 } 1001 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */ 1002 1003 1004 /*----------------------------------------------------------------------- 1005 */ 1006 int flash_erase (flash_info_t * info, int s_first, int s_last) 1007 { 1008 int rcode = 0; 1009 int prot; 1010 flash_sect_t sect; 1011 int st; 1012 1013 if (info->flash_id != FLASH_MAN_CFI) { 1014 puts ("Can't erase unknown flash type - aborted\n"); 1015 return 1; 1016 } 1017 if ((s_first < 0) || (s_first > s_last)) { 1018 puts ("- no sectors to erase\n"); 1019 return 1; 1020 } 1021 1022 prot = 0; 1023 for (sect = s_first; sect <= s_last; ++sect) { 1024 if (info->protect[sect]) { 1025 prot++; 1026 } 1027 } 1028 if (prot) { 1029 printf ("- Warning: %d protected sectors will not be erased!\n", 1030 prot); 1031 } else if (flash_verbose) { 1032 putc ('\n'); 1033 } 1034 1035 1036 for (sect = s_first; sect <= s_last; sect++) { 1037 if (info->protect[sect] == 0) { /* not protected */ 1038 switch (info->vendor) { 1039 case CFI_CMDSET_INTEL_PROG_REGIONS: 1040 case CFI_CMDSET_INTEL_STANDARD: 1041 case CFI_CMDSET_INTEL_EXTENDED: 1042 flash_write_cmd (info, sect, 0, 1043 FLASH_CMD_CLEAR_STATUS); 1044 flash_write_cmd (info, sect, 0, 1045 FLASH_CMD_BLOCK_ERASE); 1046 flash_write_cmd (info, sect, 0, 1047 FLASH_CMD_ERASE_CONFIRM); 1048 break; 1049 case CFI_CMDSET_AMD_STANDARD: 1050 case CFI_CMDSET_AMD_EXTENDED: 1051 flash_unlock_seq (info, sect); 1052 flash_write_cmd (info, sect, 1053 info->addr_unlock1, 1054 AMD_CMD_ERASE_START); 1055 flash_unlock_seq (info, sect); 1056 flash_write_cmd (info, sect, 0, 1057 AMD_CMD_ERASE_SECTOR); 1058 break; 1059 #ifdef CONFIG_FLASH_CFI_LEGACY 1060 case CFI_CMDSET_AMD_LEGACY: 1061 flash_unlock_seq (info, 0); 1062 flash_write_cmd (info, 0, info->addr_unlock1, 1063 AMD_CMD_ERASE_START); 1064 flash_unlock_seq (info, 0); 1065 flash_write_cmd (info, sect, 0, 1066 AMD_CMD_ERASE_SECTOR); 1067 break; 1068 #endif 1069 default: 1070 debug ("Unkown flash vendor %d\n", 1071 info->vendor); 1072 break; 1073 } 1074 1075 if (use_flash_status_poll(info)) { 1076 cfiword_t cword = (cfiword_t)0xffffffffffffffffULL; 1077 void *dest; 1078 dest = flash_map(info, sect, 0); 1079 st = flash_status_poll(info, &cword, dest, 1080 info->erase_blk_tout, "erase"); 1081 flash_unmap(info, sect, 0, dest); 1082 } else 1083 st = flash_full_status_check(info, sect, 1084 info->erase_blk_tout, 1085 "erase"); 1086 if (st) 1087 rcode = 1; 1088 else if (flash_verbose) 1089 putc ('.'); 1090 } 1091 } 1092 1093 if (flash_verbose) 1094 puts (" done\n"); 1095 1096 return rcode; 1097 } 1098 1099 /*----------------------------------------------------------------------- 1100 */ 1101 void flash_print_info (flash_info_t * info) 1102 { 1103 int i; 1104 1105 if (info->flash_id != FLASH_MAN_CFI) { 1106 puts ("missing or unknown FLASH type\n"); 1107 return; 1108 } 1109 1110 printf ("%s FLASH (%d x %d)", 1111 info->name, 1112 (info->portwidth << 3), (info->chipwidth << 3)); 1113 if (info->size < 1024*1024) 1114 printf (" Size: %ld kB in %d Sectors\n", 1115 info->size >> 10, info->sector_count); 1116 else 1117 printf (" Size: %ld MB in %d Sectors\n", 1118 info->size >> 20, info->sector_count); 1119 printf (" "); 1120 switch (info->vendor) { 1121 case CFI_CMDSET_INTEL_PROG_REGIONS: 1122 printf ("Intel Prog Regions"); 1123 break; 1124 case CFI_CMDSET_INTEL_STANDARD: 1125 printf ("Intel Standard"); 1126 break; 1127 case CFI_CMDSET_INTEL_EXTENDED: 1128 printf ("Intel Extended"); 1129 break; 1130 case CFI_CMDSET_AMD_STANDARD: 1131 printf ("AMD Standard"); 1132 break; 1133 case CFI_CMDSET_AMD_EXTENDED: 1134 printf ("AMD Extended"); 1135 break; 1136 #ifdef CONFIG_FLASH_CFI_LEGACY 1137 case CFI_CMDSET_AMD_LEGACY: 1138 printf ("AMD Legacy"); 1139 break; 1140 #endif 1141 default: 1142 printf ("Unknown (%d)", info->vendor); 1143 break; 1144 } 1145 printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X", 1146 info->manufacturer_id, info->device_id); 1147 if (info->device_id == 0x7E) { 1148 printf("%04X", info->device_id2); 1149 } 1150 printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n", 1151 info->erase_blk_tout, 1152 info->write_tout); 1153 if (info->buffer_size > 1) { 1154 printf (" Buffer write timeout: %ld ms, " 1155 "buffer size: %d bytes\n", 1156 info->buffer_write_tout, 1157 info->buffer_size); 1158 } 1159 1160 puts ("\n Sector Start Addresses:"); 1161 for (i = 0; i < info->sector_count; ++i) { 1162 if ((i % 5) == 0) 1163 printf ("\n"); 1164 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO 1165 int k; 1166 int size; 1167 int erased; 1168 volatile unsigned long *flash; 1169 1170 /* 1171 * Check if whole sector is erased 1172 */ 1173 size = flash_sector_size(info, i); 1174 erased = 1; 1175 flash = (volatile unsigned long *) info->start[i]; 1176 size = size >> 2; /* divide by 4 for longword access */ 1177 for (k = 0; k < size; k++) { 1178 if (*flash++ != 0xffffffff) { 1179 erased = 0; 1180 break; 1181 } 1182 } 1183 1184 /* print empty and read-only info */ 1185 printf (" %08lX %c %s ", 1186 info->start[i], 1187 erased ? 'E' : ' ', 1188 info->protect[i] ? "RO" : " "); 1189 #else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */ 1190 printf (" %08lX %s ", 1191 info->start[i], 1192 info->protect[i] ? "RO" : " "); 1193 #endif 1194 } 1195 putc ('\n'); 1196 return; 1197 } 1198 1199 /*----------------------------------------------------------------------- 1200 * This is used in a few places in write_buf() to show programming 1201 * progress. Making it a function is nasty because it needs to do side 1202 * effect updates to digit and dots. Repeated code is nasty too, so 1203 * we define it once here. 1204 */ 1205 #ifdef CONFIG_FLASH_SHOW_PROGRESS 1206 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \ 1207 if (flash_verbose) { \ 1208 dots -= dots_sub; \ 1209 if ((scale > 0) && (dots <= 0)) { \ 1210 if ((digit % 5) == 0) \ 1211 printf ("%d", digit / 5); \ 1212 else \ 1213 putc ('.'); \ 1214 digit--; \ 1215 dots += scale; \ 1216 } \ 1217 } 1218 #else 1219 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) 1220 #endif 1221 1222 /*----------------------------------------------------------------------- 1223 * Copy memory to flash, returns: 1224 * 0 - OK 1225 * 1 - write timeout 1226 * 2 - Flash not erased 1227 */ 1228 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) 1229 { 1230 ulong wp; 1231 uchar *p; 1232 int aln; 1233 cfiword_t cword; 1234 int i, rc; 1235 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE 1236 int buffered_size; 1237 #endif 1238 #ifdef CONFIG_FLASH_SHOW_PROGRESS 1239 int digit = CONFIG_FLASH_SHOW_PROGRESS; 1240 int scale = 0; 1241 int dots = 0; 1242 1243 /* 1244 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes. 1245 */ 1246 if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) { 1247 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) / 1248 CONFIG_FLASH_SHOW_PROGRESS); 1249 } 1250 #endif 1251 1252 /* get lower aligned address */ 1253 wp = (addr & ~(info->portwidth - 1)); 1254 1255 /* handle unaligned start */ 1256 if ((aln = addr - wp) != 0) { 1257 cword.l = 0; 1258 p = (uchar *)wp; 1259 for (i = 0; i < aln; ++i) 1260 flash_add_byte (info, &cword, flash_read8(p + i)); 1261 1262 for (; (i < info->portwidth) && (cnt > 0); i++) { 1263 flash_add_byte (info, &cword, *src++); 1264 cnt--; 1265 } 1266 for (; (cnt == 0) && (i < info->portwidth); ++i) 1267 flash_add_byte (info, &cword, flash_read8(p + i)); 1268 1269 rc = flash_write_cfiword (info, wp, cword); 1270 if (rc != 0) 1271 return rc; 1272 1273 wp += i; 1274 FLASH_SHOW_PROGRESS(scale, dots, digit, i); 1275 } 1276 1277 /* handle the aligned part */ 1278 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE 1279 buffered_size = (info->portwidth / info->chipwidth); 1280 buffered_size *= info->buffer_size; 1281 while (cnt >= info->portwidth) { 1282 /* prohibit buffer write when buffer_size is 1 */ 1283 if (info->buffer_size == 1) { 1284 cword.l = 0; 1285 for (i = 0; i < info->portwidth; i++) 1286 flash_add_byte (info, &cword, *src++); 1287 if ((rc = flash_write_cfiword (info, wp, cword)) != 0) 1288 return rc; 1289 wp += info->portwidth; 1290 cnt -= info->portwidth; 1291 continue; 1292 } 1293 1294 /* write buffer until next buffered_size aligned boundary */ 1295 i = buffered_size - (wp % buffered_size); 1296 if (i > cnt) 1297 i = cnt; 1298 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK) 1299 return rc; 1300 i -= i & (info->portwidth - 1); 1301 wp += i; 1302 src += i; 1303 cnt -= i; 1304 FLASH_SHOW_PROGRESS(scale, dots, digit, i); 1305 } 1306 #else 1307 while (cnt >= info->portwidth) { 1308 cword.l = 0; 1309 for (i = 0; i < info->portwidth; i++) { 1310 flash_add_byte (info, &cword, *src++); 1311 } 1312 if ((rc = flash_write_cfiword (info, wp, cword)) != 0) 1313 return rc; 1314 wp += info->portwidth; 1315 cnt -= info->portwidth; 1316 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth); 1317 } 1318 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */ 1319 1320 if (cnt == 0) { 1321 return (0); 1322 } 1323 1324 /* 1325 * handle unaligned tail bytes 1326 */ 1327 cword.l = 0; 1328 p = (uchar *)wp; 1329 for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) { 1330 flash_add_byte (info, &cword, *src++); 1331 --cnt; 1332 } 1333 for (; i < info->portwidth; ++i) 1334 flash_add_byte (info, &cword, flash_read8(p + i)); 1335 1336 return flash_write_cfiword (info, wp, cword); 1337 } 1338 1339 /*----------------------------------------------------------------------- 1340 */ 1341 #ifdef CONFIG_SYS_FLASH_PROTECTION 1342 1343 int flash_real_protect (flash_info_t * info, long sector, int prot) 1344 { 1345 int retcode = 0; 1346 1347 switch (info->vendor) { 1348 case CFI_CMDSET_INTEL_PROG_REGIONS: 1349 case CFI_CMDSET_INTEL_STANDARD: 1350 case CFI_CMDSET_INTEL_EXTENDED: 1351 flash_write_cmd (info, sector, 0, 1352 FLASH_CMD_CLEAR_STATUS); 1353 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT); 1354 if (prot) 1355 flash_write_cmd (info, sector, 0, 1356 FLASH_CMD_PROTECT_SET); 1357 else 1358 flash_write_cmd (info, sector, 0, 1359 FLASH_CMD_PROTECT_CLEAR); 1360 break; 1361 case CFI_CMDSET_AMD_EXTENDED: 1362 case CFI_CMDSET_AMD_STANDARD: 1363 /* U-Boot only checks the first byte */ 1364 if (info->manufacturer_id == (uchar)ATM_MANUFACT) { 1365 if (prot) { 1366 flash_unlock_seq (info, 0); 1367 flash_write_cmd (info, 0, 1368 info->addr_unlock1, 1369 ATM_CMD_SOFTLOCK_START); 1370 flash_unlock_seq (info, 0); 1371 flash_write_cmd (info, sector, 0, 1372 ATM_CMD_LOCK_SECT); 1373 } else { 1374 flash_write_cmd (info, 0, 1375 info->addr_unlock1, 1376 AMD_CMD_UNLOCK_START); 1377 if (info->device_id == ATM_ID_BV6416) 1378 flash_write_cmd (info, sector, 1379 0, ATM_CMD_UNLOCK_SECT); 1380 } 1381 } 1382 break; 1383 #ifdef CONFIG_FLASH_CFI_LEGACY 1384 case CFI_CMDSET_AMD_LEGACY: 1385 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS); 1386 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT); 1387 if (prot) 1388 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET); 1389 else 1390 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR); 1391 #endif 1392 }; 1393 1394 if ((retcode = 1395 flash_full_status_check (info, sector, info->erase_blk_tout, 1396 prot ? "protect" : "unprotect")) == 0) { 1397 1398 info->protect[sector] = prot; 1399 1400 /* 1401 * On some of Intel's flash chips (marked via legacy_unlock) 1402 * unprotect unprotects all locking. 1403 */ 1404 if ((prot == 0) && (info->legacy_unlock)) { 1405 flash_sect_t i; 1406 1407 for (i = 0; i < info->sector_count; i++) { 1408 if (info->protect[i]) 1409 flash_real_protect (info, i, 1); 1410 } 1411 } 1412 } 1413 return retcode; 1414 } 1415 1416 /*----------------------------------------------------------------------- 1417 * flash_read_user_serial - read the OneTimeProgramming cells 1418 */ 1419 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset, 1420 int len) 1421 { 1422 uchar *src; 1423 uchar *dst; 1424 1425 dst = buffer; 1426 src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION); 1427 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID); 1428 memcpy (dst, src + offset, len); 1429 flash_write_cmd (info, 0, 0, info->cmd_reset); 1430 flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src); 1431 } 1432 1433 /* 1434 * flash_read_factory_serial - read the device Id from the protection area 1435 */ 1436 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset, 1437 int len) 1438 { 1439 uchar *src; 1440 1441 src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION); 1442 flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID); 1443 memcpy (buffer, src + offset, len); 1444 flash_write_cmd (info, 0, 0, info->cmd_reset); 1445 flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src); 1446 } 1447 1448 #endif /* CONFIG_SYS_FLASH_PROTECTION */ 1449 1450 /*----------------------------------------------------------------------- 1451 * Reverse the order of the erase regions in the CFI QRY structure. 1452 * This is needed for chips that are either a) correctly detected as 1453 * top-boot, or b) buggy. 1454 */ 1455 static void cfi_reverse_geometry(struct cfi_qry *qry) 1456 { 1457 unsigned int i, j; 1458 u32 tmp; 1459 1460 for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) { 1461 tmp = qry->erase_region_info[i]; 1462 qry->erase_region_info[i] = qry->erase_region_info[j]; 1463 qry->erase_region_info[j] = tmp; 1464 } 1465 } 1466 1467 /*----------------------------------------------------------------------- 1468 * read jedec ids from device and set corresponding fields in info struct 1469 * 1470 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct 1471 * 1472 */ 1473 static void cmdset_intel_read_jedec_ids(flash_info_t *info) 1474 { 1475 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); 1476 flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID); 1477 udelay(1000); /* some flash are slow to respond */ 1478 info->manufacturer_id = flash_read_uchar (info, 1479 FLASH_OFFSET_MANUFACTURER_ID); 1480 info->device_id = flash_read_uchar (info, 1481 FLASH_OFFSET_DEVICE_ID); 1482 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); 1483 } 1484 1485 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry) 1486 { 1487 info->cmd_reset = FLASH_CMD_RESET; 1488 1489 cmdset_intel_read_jedec_ids(info); 1490 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI); 1491 1492 #ifdef CONFIG_SYS_FLASH_PROTECTION 1493 /* read legacy lock/unlock bit from intel flash */ 1494 if (info->ext_addr) { 1495 info->legacy_unlock = flash_read_uchar (info, 1496 info->ext_addr + 5) & 0x08; 1497 } 1498 #endif 1499 1500 return 0; 1501 } 1502 1503 static void cmdset_amd_read_jedec_ids(flash_info_t *info) 1504 { 1505 ushort bankId = 0; 1506 uchar manuId; 1507 1508 flash_write_cmd(info, 0, 0, AMD_CMD_RESET); 1509 flash_unlock_seq(info, 0); 1510 flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID); 1511 udelay(1000); /* some flash are slow to respond */ 1512 1513 manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID); 1514 /* JEDEC JEP106Z specifies ID codes up to bank 7 */ 1515 while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) { 1516 bankId += 0x100; 1517 manuId = flash_read_uchar (info, 1518 bankId | FLASH_OFFSET_MANUFACTURER_ID); 1519 } 1520 info->manufacturer_id = manuId; 1521 1522 switch (info->chipwidth){ 1523 case FLASH_CFI_8BIT: 1524 info->device_id = flash_read_uchar (info, 1525 FLASH_OFFSET_DEVICE_ID); 1526 if (info->device_id == 0x7E) { 1527 /* AMD 3-byte (expanded) device ids */ 1528 info->device_id2 = flash_read_uchar (info, 1529 FLASH_OFFSET_DEVICE_ID2); 1530 info->device_id2 <<= 8; 1531 info->device_id2 |= flash_read_uchar (info, 1532 FLASH_OFFSET_DEVICE_ID3); 1533 } 1534 break; 1535 case FLASH_CFI_16BIT: 1536 info->device_id = flash_read_word (info, 1537 FLASH_OFFSET_DEVICE_ID); 1538 break; 1539 default: 1540 break; 1541 } 1542 flash_write_cmd(info, 0, 0, AMD_CMD_RESET); 1543 } 1544 1545 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry) 1546 { 1547 info->cmd_reset = AMD_CMD_RESET; 1548 1549 cmdset_amd_read_jedec_ids(info); 1550 flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI); 1551 1552 return 0; 1553 } 1554 1555 #ifdef CONFIG_FLASH_CFI_LEGACY 1556 static void flash_read_jedec_ids (flash_info_t * info) 1557 { 1558 info->manufacturer_id = 0; 1559 info->device_id = 0; 1560 info->device_id2 = 0; 1561 1562 switch (info->vendor) { 1563 case CFI_CMDSET_INTEL_PROG_REGIONS: 1564 case CFI_CMDSET_INTEL_STANDARD: 1565 case CFI_CMDSET_INTEL_EXTENDED: 1566 cmdset_intel_read_jedec_ids(info); 1567 break; 1568 case CFI_CMDSET_AMD_STANDARD: 1569 case CFI_CMDSET_AMD_EXTENDED: 1570 cmdset_amd_read_jedec_ids(info); 1571 break; 1572 default: 1573 break; 1574 } 1575 } 1576 1577 /*----------------------------------------------------------------------- 1578 * Call board code to request info about non-CFI flash. 1579 * board_flash_get_legacy needs to fill in at least: 1580 * info->portwidth, info->chipwidth and info->interface for Jedec probing. 1581 */ 1582 static int flash_detect_legacy(phys_addr_t base, int banknum) 1583 { 1584 flash_info_t *info = &flash_info[banknum]; 1585 1586 if (board_flash_get_legacy(base, banknum, info)) { 1587 /* board code may have filled info completely. If not, we 1588 use JEDEC ID probing. */ 1589 if (!info->vendor) { 1590 int modes[] = { 1591 CFI_CMDSET_AMD_STANDARD, 1592 CFI_CMDSET_INTEL_STANDARD 1593 }; 1594 int i; 1595 1596 for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) { 1597 info->vendor = modes[i]; 1598 info->start[0] = 1599 (ulong)map_physmem(base, 1600 info->portwidth, 1601 MAP_NOCACHE); 1602 if (info->portwidth == FLASH_CFI_8BIT 1603 && info->interface == FLASH_CFI_X8X16) { 1604 info->addr_unlock1 = 0x2AAA; 1605 info->addr_unlock2 = 0x5555; 1606 } else { 1607 info->addr_unlock1 = 0x5555; 1608 info->addr_unlock2 = 0x2AAA; 1609 } 1610 flash_read_jedec_ids(info); 1611 debug("JEDEC PROBE: ID %x %x %x\n", 1612 info->manufacturer_id, 1613 info->device_id, 1614 info->device_id2); 1615 if (jedec_flash_match(info, info->start[0])) 1616 break; 1617 else 1618 unmap_physmem((void *)info->start[0], 1619 MAP_NOCACHE); 1620 } 1621 } 1622 1623 switch(info->vendor) { 1624 case CFI_CMDSET_INTEL_PROG_REGIONS: 1625 case CFI_CMDSET_INTEL_STANDARD: 1626 case CFI_CMDSET_INTEL_EXTENDED: 1627 info->cmd_reset = FLASH_CMD_RESET; 1628 break; 1629 case CFI_CMDSET_AMD_STANDARD: 1630 case CFI_CMDSET_AMD_EXTENDED: 1631 case CFI_CMDSET_AMD_LEGACY: 1632 info->cmd_reset = AMD_CMD_RESET; 1633 break; 1634 } 1635 info->flash_id = FLASH_MAN_CFI; 1636 return 1; 1637 } 1638 return 0; /* use CFI */ 1639 } 1640 #else 1641 static inline int flash_detect_legacy(phys_addr_t base, int banknum) 1642 { 1643 return 0; /* use CFI */ 1644 } 1645 #endif 1646 1647 /*----------------------------------------------------------------------- 1648 * detect if flash is compatible with the Common Flash Interface (CFI) 1649 * http://www.jedec.org/download/search/jesd68.pdf 1650 */ 1651 static void flash_read_cfi (flash_info_t *info, void *buf, 1652 unsigned int start, size_t len) 1653 { 1654 u8 *p = buf; 1655 unsigned int i; 1656 1657 for (i = 0; i < len; i++) 1658 p[i] = flash_read_uchar(info, start + i); 1659 } 1660 1661 void __flash_cmd_reset(flash_info_t *info) 1662 { 1663 /* 1664 * We do not yet know what kind of commandset to use, so we issue 1665 * the reset command in both Intel and AMD variants, in the hope 1666 * that AMD flash roms ignore the Intel command. 1667 */ 1668 flash_write_cmd(info, 0, 0, AMD_CMD_RESET); 1669 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); 1670 } 1671 void flash_cmd_reset(flash_info_t *info) 1672 __attribute__((weak,alias("__flash_cmd_reset"))); 1673 1674 static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry) 1675 { 1676 int cfi_offset; 1677 1678 /* Issue FLASH reset command */ 1679 flash_cmd_reset(info); 1680 1681 for (cfi_offset=0; 1682 cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint); 1683 cfi_offset++) { 1684 flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset], 1685 FLASH_CMD_CFI); 1686 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q') 1687 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') 1688 && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) { 1689 flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP, 1690 sizeof(struct cfi_qry)); 1691 info->interface = le16_to_cpu(qry->interface_desc); 1692 1693 info->cfi_offset = flash_offset_cfi[cfi_offset]; 1694 debug ("device interface is %d\n", 1695 info->interface); 1696 debug ("found port %d chip %d ", 1697 info->portwidth, info->chipwidth); 1698 debug ("port %d bits chip %d bits\n", 1699 info->portwidth << CFI_FLASH_SHIFT_WIDTH, 1700 info->chipwidth << CFI_FLASH_SHIFT_WIDTH); 1701 1702 /* calculate command offsets as in the Linux driver */ 1703 info->addr_unlock1 = 0x555; 1704 info->addr_unlock2 = 0x2aa; 1705 1706 /* 1707 * modify the unlock address if we are 1708 * in compatibility mode 1709 */ 1710 if ( /* x8/x16 in x8 mode */ 1711 ((info->chipwidth == FLASH_CFI_BY8) && 1712 (info->interface == FLASH_CFI_X8X16)) || 1713 /* x16/x32 in x16 mode */ 1714 ((info->chipwidth == FLASH_CFI_BY16) && 1715 (info->interface == FLASH_CFI_X16X32))) 1716 { 1717 info->addr_unlock1 = 0xaaa; 1718 info->addr_unlock2 = 0x555; 1719 } 1720 1721 info->name = "CFI conformant"; 1722 return 1; 1723 } 1724 } 1725 1726 return 0; 1727 } 1728 1729 static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry) 1730 { 1731 debug ("flash detect cfi\n"); 1732 1733 for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH; 1734 info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) { 1735 for (info->chipwidth = FLASH_CFI_BY8; 1736 info->chipwidth <= info->portwidth; 1737 info->chipwidth <<= 1) 1738 if (__flash_detect_cfi(info, qry)) 1739 return 1; 1740 } 1741 debug ("not found\n"); 1742 return 0; 1743 } 1744 1745 /* 1746 * Manufacturer-specific quirks. Add workarounds for geometry 1747 * reversal, etc. here. 1748 */ 1749 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry) 1750 { 1751 /* check if flash geometry needs reversal */ 1752 if (qry->num_erase_regions > 1) { 1753 /* reverse geometry if top boot part */ 1754 if (info->cfi_version < 0x3131) { 1755 /* CFI < 1.1, try to guess from device id */ 1756 if ((info->device_id & 0x80) != 0) 1757 cfi_reverse_geometry(qry); 1758 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) { 1759 /* CFI >= 1.1, deduct from top/bottom flag */ 1760 /* note: ext_addr is valid since cfi_version > 0 */ 1761 cfi_reverse_geometry(qry); 1762 } 1763 } 1764 } 1765 1766 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry) 1767 { 1768 int reverse_geometry = 0; 1769 1770 /* Check the "top boot" bit in the PRI */ 1771 if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1)) 1772 reverse_geometry = 1; 1773 1774 /* AT49BV6416(T) list the erase regions in the wrong order. 1775 * However, the device ID is identical with the non-broken 1776 * AT49BV642D they differ in the high byte. 1777 */ 1778 if (info->device_id == 0xd6 || info->device_id == 0xd2) 1779 reverse_geometry = !reverse_geometry; 1780 1781 if (reverse_geometry) 1782 cfi_reverse_geometry(qry); 1783 } 1784 1785 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry) 1786 { 1787 /* check if flash geometry needs reversal */ 1788 if (qry->num_erase_regions > 1) { 1789 /* reverse geometry if top boot part */ 1790 if (info->cfi_version < 0x3131) { 1791 /* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */ 1792 if (info->device_id == 0x22CA || 1793 info->device_id == 0x2256) { 1794 cfi_reverse_geometry(qry); 1795 } 1796 } 1797 } 1798 } 1799 1800 /* 1801 * The following code cannot be run from FLASH! 1802 * 1803 */ 1804 ulong flash_get_size (phys_addr_t base, int banknum) 1805 { 1806 flash_info_t *info = &flash_info[banknum]; 1807 int i, j; 1808 flash_sect_t sect_cnt; 1809 phys_addr_t sector; 1810 unsigned long tmp; 1811 int size_ratio; 1812 uchar num_erase_regions; 1813 int erase_region_size; 1814 int erase_region_count; 1815 struct cfi_qry qry; 1816 1817 memset(&qry, 0, sizeof(qry)); 1818 1819 info->ext_addr = 0; 1820 info->cfi_version = 0; 1821 #ifdef CONFIG_SYS_FLASH_PROTECTION 1822 info->legacy_unlock = 0; 1823 #endif 1824 1825 info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE); 1826 1827 if (flash_detect_cfi (info, &qry)) { 1828 info->vendor = le16_to_cpu(qry.p_id); 1829 info->ext_addr = le16_to_cpu(qry.p_adr); 1830 num_erase_regions = qry.num_erase_regions; 1831 1832 if (info->ext_addr) { 1833 info->cfi_version = (ushort) flash_read_uchar (info, 1834 info->ext_addr + 3) << 8; 1835 info->cfi_version |= (ushort) flash_read_uchar (info, 1836 info->ext_addr + 4); 1837 } 1838 1839 #ifdef DEBUG 1840 flash_printqry (&qry); 1841 #endif 1842 1843 switch (info->vendor) { 1844 case CFI_CMDSET_INTEL_PROG_REGIONS: 1845 case CFI_CMDSET_INTEL_STANDARD: 1846 case CFI_CMDSET_INTEL_EXTENDED: 1847 cmdset_intel_init(info, &qry); 1848 break; 1849 case CFI_CMDSET_AMD_STANDARD: 1850 case CFI_CMDSET_AMD_EXTENDED: 1851 cmdset_amd_init(info, &qry); 1852 break; 1853 default: 1854 printf("CFI: Unknown command set 0x%x\n", 1855 info->vendor); 1856 /* 1857 * Unfortunately, this means we don't know how 1858 * to get the chip back to Read mode. Might 1859 * as well try an Intel-style reset... 1860 */ 1861 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); 1862 return 0; 1863 } 1864 1865 /* Do manufacturer-specific fixups */ 1866 switch (info->manufacturer_id) { 1867 case 0x0001: 1868 flash_fixup_amd(info, &qry); 1869 break; 1870 case 0x001f: 1871 flash_fixup_atmel(info, &qry); 1872 break; 1873 case 0x0020: 1874 flash_fixup_stm(info, &qry); 1875 break; 1876 } 1877 1878 debug ("manufacturer is %d\n", info->vendor); 1879 debug ("manufacturer id is 0x%x\n", info->manufacturer_id); 1880 debug ("device id is 0x%x\n", info->device_id); 1881 debug ("device id2 is 0x%x\n", info->device_id2); 1882 debug ("cfi version is 0x%04x\n", info->cfi_version); 1883 1884 size_ratio = info->portwidth / info->chipwidth; 1885 /* if the chip is x8/x16 reduce the ratio by half */ 1886 if ((info->interface == FLASH_CFI_X8X16) 1887 && (info->chipwidth == FLASH_CFI_BY8)) { 1888 size_ratio >>= 1; 1889 } 1890 debug ("size_ratio %d port %d bits chip %d bits\n", 1891 size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH, 1892 info->chipwidth << CFI_FLASH_SHIFT_WIDTH); 1893 debug ("found %d erase regions\n", num_erase_regions); 1894 sect_cnt = 0; 1895 sector = base; 1896 for (i = 0; i < num_erase_regions; i++) { 1897 if (i > NUM_ERASE_REGIONS) { 1898 printf ("%d erase regions found, only %d used\n", 1899 num_erase_regions, NUM_ERASE_REGIONS); 1900 break; 1901 } 1902 1903 tmp = le32_to_cpu(qry.erase_region_info[i]); 1904 debug("erase region %u: 0x%08lx\n", i, tmp); 1905 1906 erase_region_count = (tmp & 0xffff) + 1; 1907 tmp >>= 16; 1908 erase_region_size = 1909 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128; 1910 debug ("erase_region_count = %d erase_region_size = %d\n", 1911 erase_region_count, erase_region_size); 1912 for (j = 0; j < erase_region_count; j++) { 1913 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) { 1914 printf("ERROR: too many flash sectors\n"); 1915 break; 1916 } 1917 info->start[sect_cnt] = 1918 (ulong)map_physmem(sector, 1919 info->portwidth, 1920 MAP_NOCACHE); 1921 sector += (erase_region_size * size_ratio); 1922 1923 /* 1924 * Only read protection status from 1925 * supported devices (intel...) 1926 */ 1927 switch (info->vendor) { 1928 case CFI_CMDSET_INTEL_PROG_REGIONS: 1929 case CFI_CMDSET_INTEL_EXTENDED: 1930 case CFI_CMDSET_INTEL_STANDARD: 1931 info->protect[sect_cnt] = 1932 flash_isset (info, sect_cnt, 1933 FLASH_OFFSET_PROTECT, 1934 FLASH_STATUS_PROTECT); 1935 break; 1936 default: 1937 /* default: not protected */ 1938 info->protect[sect_cnt] = 0; 1939 } 1940 1941 sect_cnt++; 1942 } 1943 } 1944 1945 info->sector_count = sect_cnt; 1946 info->size = 1 << qry.dev_size; 1947 /* multiply the size by the number of chips */ 1948 info->size *= size_ratio; 1949 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size); 1950 tmp = 1 << qry.block_erase_timeout_typ; 1951 info->erase_blk_tout = tmp * 1952 (1 << qry.block_erase_timeout_max); 1953 tmp = (1 << qry.buf_write_timeout_typ) * 1954 (1 << qry.buf_write_timeout_max); 1955 1956 /* round up when converting to ms */ 1957 info->buffer_write_tout = (tmp + 999) / 1000; 1958 tmp = (1 << qry.word_write_timeout_typ) * 1959 (1 << qry.word_write_timeout_max); 1960 /* round up when converting to ms */ 1961 info->write_tout = (tmp + 999) / 1000; 1962 info->flash_id = FLASH_MAN_CFI; 1963 if ((info->interface == FLASH_CFI_X8X16) && 1964 (info->chipwidth == FLASH_CFI_BY8)) { 1965 /* XXX - Need to test on x8/x16 in parallel. */ 1966 info->portwidth >>= 1; 1967 } 1968 1969 flash_write_cmd (info, 0, 0, info->cmd_reset); 1970 } 1971 1972 return (info->size); 1973 } 1974 1975 void flash_set_verbose(uint v) 1976 { 1977 flash_verbose = v; 1978 } 1979 1980 /*----------------------------------------------------------------------- 1981 */ 1982 unsigned long flash_init (void) 1983 { 1984 unsigned long size = 0; 1985 int i; 1986 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST) 1987 struct apl_s { 1988 ulong start; 1989 ulong size; 1990 } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST; 1991 #endif 1992 1993 #ifdef CONFIG_SYS_FLASH_PROTECTION 1994 /* read environment from EEPROM */ 1995 char s[64]; 1996 getenv_r ("unlock", s, sizeof(s)); 1997 #endif 1998 1999 #define BANK_BASE(i) (((phys_addr_t [CFI_MAX_FLASH_BANKS])CONFIG_SYS_FLASH_BANKS_LIST)[i]) 2000 2001 /* Init: no FLASHes known */ 2002 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) { 2003 flash_info[i].flash_id = FLASH_UNKNOWN; 2004 2005 if (!flash_detect_legacy (BANK_BASE(i), i)) 2006 flash_get_size (BANK_BASE(i), i); 2007 size += flash_info[i].size; 2008 if (flash_info[i].flash_id == FLASH_UNKNOWN) { 2009 #ifndef CONFIG_SYS_FLASH_QUIET_TEST 2010 printf ("## Unknown FLASH on Bank %d " 2011 "- Size = 0x%08lx = %ld MB\n", 2012 i+1, flash_info[i].size, 2013 flash_info[i].size << 20); 2014 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */ 2015 } 2016 #ifdef CONFIG_SYS_FLASH_PROTECTION 2017 else if ((s != NULL) && (strcmp(s, "yes") == 0)) { 2018 /* 2019 * Only the U-Boot image and it's environment 2020 * is protected, all other sectors are 2021 * unprotected (unlocked) if flash hardware 2022 * protection is used (CONFIG_SYS_FLASH_PROTECTION) 2023 * and the environment variable "unlock" is 2024 * set to "yes". 2025 */ 2026 if (flash_info[i].legacy_unlock) { 2027 int k; 2028 2029 /* 2030 * Disable legacy_unlock temporarily, 2031 * since flash_real_protect would 2032 * relock all other sectors again 2033 * otherwise. 2034 */ 2035 flash_info[i].legacy_unlock = 0; 2036 2037 /* 2038 * Legacy unlocking (e.g. Intel J3) -> 2039 * unlock only one sector. This will 2040 * unlock all sectors. 2041 */ 2042 flash_real_protect (&flash_info[i], 0, 0); 2043 2044 flash_info[i].legacy_unlock = 1; 2045 2046 /* 2047 * Manually mark other sectors as 2048 * unlocked (unprotected) 2049 */ 2050 for (k = 1; k < flash_info[i].sector_count; k++) 2051 flash_info[i].protect[k] = 0; 2052 } else { 2053 /* 2054 * No legancy unlocking -> unlock all sectors 2055 */ 2056 flash_protect (FLAG_PROTECT_CLEAR, 2057 flash_info[i].start[0], 2058 flash_info[i].start[0] 2059 + flash_info[i].size - 1, 2060 &flash_info[i]); 2061 } 2062 } 2063 #endif /* CONFIG_SYS_FLASH_PROTECTION */ 2064 } 2065 2066 /* Monitor protection ON by default */ 2067 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \ 2068 (!defined(CONFIG_MONITOR_IS_IN_RAM)) 2069 flash_protect (FLAG_PROTECT_SET, 2070 CONFIG_SYS_MONITOR_BASE, 2071 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, 2072 flash_get_info(CONFIG_SYS_MONITOR_BASE)); 2073 #endif 2074 2075 /* Environment protection ON by default */ 2076 #ifdef CONFIG_ENV_IS_IN_FLASH 2077 flash_protect (FLAG_PROTECT_SET, 2078 CONFIG_ENV_ADDR, 2079 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, 2080 flash_get_info(CONFIG_ENV_ADDR)); 2081 #endif 2082 2083 /* Redundant environment protection ON by default */ 2084 #ifdef CONFIG_ENV_ADDR_REDUND 2085 flash_protect (FLAG_PROTECT_SET, 2086 CONFIG_ENV_ADDR_REDUND, 2087 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1, 2088 flash_get_info(CONFIG_ENV_ADDR_REDUND)); 2089 #endif 2090 2091 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST) 2092 for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) { 2093 debug("autoprotecting from %08x to %08x\n", 2094 apl[i].start, apl[i].start + apl[i].size - 1); 2095 flash_protect (FLAG_PROTECT_SET, 2096 apl[i].start, 2097 apl[i].start + apl[i].size - 1, 2098 flash_get_info(apl[i].start)); 2099 } 2100 #endif 2101 2102 #ifdef CONFIG_FLASH_CFI_MTD 2103 cfi_mtd_init(); 2104 #endif 2105 2106 return (size); 2107 } 2108